When the Moon is roughly between the sun and the Earth, we can't see any of its lighted side, and that's the time of the New Moon.
If it's lined up just right so that its shadow falls on the Earth at the same time, the people near where its shadow falls see a solar eclipse.
When the Moon moves between the Sun and Earth, it casts a shadow, causing a solar eclipse. This occurs during the new moon phase when everything aligns properly. The correct answer is d. solar eclipse.
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